Distribution of secretory inhibitor of platelet microbiddal protein among anaerobic bacteria isolate

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AIM: To study the secretory inhibitor of platelet microbicidal protein (SIPHP) phenotypes of faecal anaerobic isolates from patients with diarrhea.METHODS: Faecal isolates of anaerobic bacteria(B.fragiliS,n=42; B.longum,n=70;A.israelii,n=21;E.lentum,n=12) from children with diarrhea were tested.SlPHP production was tested by inhibition of platelet microbicidal protein (PHP) bioactivity against B.subtilis and was expressed as percentage of inhibition of PMP bactericidal activity.RESULTS: Among anaerobic isolates 80% of B.Iongum strains,85.7% of A.israelii strains,50%of E.lentum strains and 92.86% of B.fragilis strains were SIPMP-positive.The isolated anaerobic organisms demonstrated SIPHP production at a mean level of 13.8%±0.7%,14.7%±1.8%,3.9%±0.9% (P<0.05) and 26.8%±7.5% (P<0.05) for bifidobacteria,A.israelii,E.lentum and B.fragilis,respectively.CONCLUSION: Data from the present study may have significant implications in understanding the pathogenesis of microecological disorders in the intestine,as well as for future improvement in the prevention and therapy of anaerobe-associated infections.
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